US EPA

1524400 

Journal Article 

Study on Ammonia-Based Selective Catalytic Reduction and the Dosing Control Strategy Based on a V-W/Ti Catalyst 

Bai, S; Tao, J; Sun, Q; Tong, D; Li, G 

2013 

Yes 

Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 

25 

1 

181-185 

WOS:000312620300035 

In present work, V2O5-WO3/TiO2 catalyst was prepared and a dosing strategy for the transient control of an exhaust after-treatment system using the ammonia-based selective catalytic reduction was developed on an 11.6 L heavy-duty diesel engine. NOx reduction characteristics of prepared catalyst were measured using simulating gas test equipment, its conversion efficiency was higher 10 % than that of the commercial catalyst from 240 and 410 degrees C and it was lower 10 % than that of the commercial catalyst from 410 to 500 degrees C. The dosing strategy with and without dynamic correction have been tested in the European steady state cycle and European transient cycle, results indicate that with correction could meet emission standard and decrease urea consumption obviously and it can decrease NH3 slip effectively at transient work conditions. 

Selective catalytic reduction; Urea dosing strategy; Nitrogen oxides